Floatless carburetor



March 8,' 1932. M. KREHER FLOATLESS CARBURETOR- 2 Sheets-Sheet l ,fnvena?. 4mm/(nar- 5 n L l n l llillllll Filed June 20, 1929 Maah 8, 1932.M. KREHER FLoA'rLEss cARBuRETon 2 Sheets-Sheet 2 Filed June 20, 1929Patented Mar. 8, 1932 MAX KREHEB, F FBEIBERG, GERMANY, ASSIGNOR T0 CURTGERMANY ATENT GFFICEl FLoA'rLEss cAnnURnron Application led June 20,1929, Serial No.

This invention relates to a floatless carburetor which works withoutthrottle valve. The construction and object of the invention arehereinafter explained.y

An embodiment of the invention is illustrated by way of example in theaccompany, ing drawings in which:

Fig. 1 shows a vertical section on line 1-1 of Fig. 2. l

Fig. 2 is atop plan view of the carburetor. Fig. 3 shows a verticalsection on line 3-3 of'Fig. 2. p

Fig. 4 shows on a larger scale a detail.

The casing is in three parts and constructed 15 as follows The top part1 has a flange 2 at its upper end, which serves for connecting to thehousing of the engine. In part 1 a shaft 3 with lever 4 is mounted whichshaft carries a fing The middle part 6 is screwed to the top part.Between these two parts an annular space 7 -is provided in which a. ring8 is fitted having a shoulder 9, a lower inclined surface 10 and anupper inclined surface 11. This latter is curved. In a bridge a channel13 is bored in front of which a benzine chamber 14 is arranged. A socket15 projects from the bridge 12' and an air channel 16 fitted with anadjusting screw 17 terminates in said socket 15. A hollow boss 18projects in downward direction, ,the lower portion of which forms a mudpocket 20 and is closed by ak screw 19. In the boss 18 a sleeve 21 isscrewed the head of which forms a valve seat 22 and is provided withslots 23. The channel 13 terminates in the boss 18.

The bottom part 24 of the housing is a forechamber for the feed air andis screwed to the middle part 6 by a nut 25.

The fuel valve is described in a former application and is thereforedesignated as a whole as a mushroom valve 26. The valve needle 27 has acone 28 and a point 29.

In the drawings the carburetor is shown in ino erative position. Thefuel valve is held in t e eXtreme position by the finger'. The closureis effected by the cone 28, whereas the point 29 regulates. The airassage leads beet) tween the mushroom 26 and the ring 8, the

372,468, and in Germany March 16, 1929. l

shoulder 9 causes a strangling in the air passage. The mushroom 26 liftsautomatically owing to the suction when it is released by the finger 5actuated by the turning of the sha-ft 3. The farther the linger isturned back the higher can the valve rise and the greater will Lunwre,or ANNABERG,

be the quantity of suction air. The channel 4 16 is an auxiliaryairpassage in the interior of the mushroom.

The benzine passes through the channel 13 vin the boss 18 and maintainsthe same continually full. Impurities can settle in the mud pocket 20.Owing to the suction the benzine rises into the head 26 and is torn awayon the edge of this head by the circulating Suction current and therebyatomized. The bowl 11, to which the mixture first passes, causes aneddying and produces a. very intimate and perfect mixing. The suctioncurrent 16 is then introduced if necessary; it unites with the outersuction current through the mushroom 26,

l.I claim z- A lHoatless carburetor, comprising in combination an upperpart of a casing, a lowr part of a casing, a fuel feed pipecommunieating with said lower casing part a double cone clamped betweensaid upper and said lower casing parts, a mushroom valve in said doublecone to control the fuel feed, a shaft in said upper casing part, afinger on said shaft adapted to hold said mushroom valve on said cone, aspring actuated needle valve in said mushroom valve ada ted to regulatethe fuel feed, and an auxiliary air ,conduit discharging into themushroom valve above said needle valve.

In testimony whereof I allix my signature.

MAX KREHER.

